"copy" captcha image

Question

Hi, I´m creating a windows forms program that is used for creating accounts online on a few different websites.

Everything is working fine exept the captcha code of course. Now please don't misunderstand me, I'm not out to spam pages or anything like that.

What I want to do here is to somehow "copy" the generated captcha image and present it on my windows form. The problem is that the "src=" in the HTML tag doesn't call for a static URL, but calls a PHP-page that generates the captcha. I hope you understand what I want to do.. if not, please ask and I will try to be more clear.